Agreed that many people think that they are doing right by their birds while caring for them very poorly. I don't feel like pellets are an "end all" answer here at all, but could indeed be used as part of a healthy diet.
Veterinary nutritionists.... not sure how many are actually out there. Many vets are taught that pellets are a healthy diet and that you can't provide a healthy, fresh food based diet to your birds... and yet, people do it... and have birds who test healthy, year after year, with no nutritional deficiencies. I'd personally love to remove pellets out of my birds' diets, but I don't feel comfortable removing them at this time, so I'll continue to feed. Perhaps that will change some day. I'm glad that at least my conure, who's *always* been picky about eating fresh foods (he'd eat them, but not very much, or eat them disdainfully), all of a sudden now looks forward to eating them?!?!? I've had him for nearly 12 years (aka half his life) and only within the past year has he taken a bigger interest in fresh food.